PopConfirm

pop_confirm.dart

import 'dart:async';

import 'package:flutter/material.dart';
import 'package:flutter/services.dart';

/// Flutter widget to execute asynchronous operations before a page is popped
/// Uses Flutter 3.16.x's PopScope attribute
class PopConfirm extends StatefulWidget {
  const PopConfirm({
    super.key,
    required this.handler,
    required this.child,
  });

  final Future<bool> Function() handler;
  final Widget child;

  @override
  State<PopConfirm> createState() => _PopConfirmState();
}

class _PopConfirmState extends State<PopConfirm> {
  @override
  Widget build(BuildContext context) {
    return PopScope(
      canPop: false,
      onPopInvoked: (didPop) async {
        if (!didPop && await widget.handler() && context.mounted) {
          Navigator.pop(context);
        }
      },
      child: widget.child,
    );
  }
}